can both ends of a 100' strip of leds be hooked to the same power supply with out damaging the power supply of leds

closed as unclear what you're asking by isherwood, mmathis, ThreePhaseEel, Daniel Griscom, Machavity Feb 19 '18 at 18:31

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  • Hello, and welcome to Stack Exchange. We'll need a lot more information to help you, and this may not even be on topic here. For instance, it sounds like you're talking about LED strips powered by a LED-specific power supply; if so, then it completely depends on the specs for the LED strips and the power supply. – Daniel Griscom Feb 16 '18 at 15:27
  • Yes, that’s a common trick to counter voltage drop. Don’t mix which conductor is which. Simple ring topography for power feed. – Tyson Feb 16 '18 at 16:01
  • Adafruit uses the technique in several tutorials. I'm having trouble finding one that addresses your need EXACTLY, most deal with multiple 10 meter strips. As long as you keep + and - sorted tho you can feed from the same power supply to both ends, don't do it with the data line(s) tho. – Tyson Feb 16 '18 at 16:21
  • I've done it with slotcar tracks. :P – isherwood Feb 16 '18 at 16:44
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    Any trolley modeler has done it with trolley tracks :) as do real trolley systems. You can feeder with DC. – Harper Feb 16 '18 at 17:34

120V or any mains voltage - no no no no no no no!

5 or 12 volt DC, yes, and at 100' you will need to feed it from many intermediate points as well.

24 volt DC, along 100 feet you will not only need to feed both ends but several intermediate points too. Just not as many as 12V.

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